Finding the Fourth Proportional to 17,639.78, 24,343.27 and 10,086.80

Step by Step Solution

1. Step 1: Write the proportion equation
   17,639.78 : 24,343.27 = 10,086.80 : x
2. Step 2: Convert to fraction form
   17,639.78/24,343.27 = 10,086.80/x
3. Step 3: Cross multiply
   17,639.78x = 24,343.27 × 10,086.80
4. Step 4: Simplify right side
   17,639.78x = 245,545,548.90
5. Step 5: Solve for x
   x = 245,545,548.90/17,639.78
6. Step 6: Final answer
   x = 13,919.99